1950-03-10	null
1950-03-18	1950-03-10
1951-07-11	1950-03-18
1953-04-04	1951-07-11
1953-06-22	1953-04-04
1954-07-01	1953-06-22
1954-10-10	1954-07-01
1954-10-10	1954-10-10
1955-06-08	1954-10-10
1956-02-17	1955-06-08
1957-05-03	1956-02-17
1958-02-03	1957-05-03
1958-08-21	1958-02-03
1958-08-21	1958-08-21
1958-10-12	1958-08-21
1958-10-17	1958-10-12
1958-10-22	1958-10-17
1959-05-24	1958-10-22
1959-10-04	1959-05-24
1960-05-12	1959-10-04
1961-01-12	1960-05-12
1962-06-04	1961-01-12
1963-09-06	1962-06-04
1965-02-03	1963-09-06
1965-02-21	1965-02-03
1965-05-13	1965-02-21
1965-10-07	1965-05-13
1966-08-18	1965-10-07
1968-01-26	1966-08-18
1968-05-10	1968-01-26
1968-05-10	1968-05-10
